Sierra 1507 BlitzKing 6mm .243 70gr SBT Spitzer Boat-Tail Bullets - 100 Count

Sierra 1507 BlitzKing 6mm .243 70gr SBT Spitzer Boat-Tail bullets are purpose-built for varmint and small game hunting where explosive, reliable expansion matters. These 100-count boxes deliver the accuracy tradition Sierra has built over decades, combined with ballistics engineered specifically for explosive performance on impact. If you're handloading a .243 Winchester or other 6mm cartridge for predator control, prairie dog shoots, or small-game hunting, BlitzKing ammunition gives you a projectile that balances precision with predictable terminal performance.

What sets BlitzKing apart is the pairing of thin jackets—which promote rapid expansion—with Sierra's proprietary tip compound designed to initiate expansion reliably even at moderate velocities. The spitzer boat-tail design provides ballistic efficiency without the complexity of polymer-tipped match bullets, keeping your reloading straightforward and your cost per round reasonable. The 70-grain weight in 6mm is the lightest of Sierra's BlitzKing lineup and is rated for muzzle velocities up to 4000 fps, giving you flexibility in load development across common .243 rifle platforms and powders.

Sierra's reputation in both competition and field use means you're not guessing on bullet quality. Whether you're a long-time handloader or stepping up your varmint-hunting ammunition, these bullets integrate easily into your existing .243 brass and powder selection. The 100-count box is a practical volume for load development, testing, and hunting season prep without overcommitting to a single load.

Key Features

• 70-grain weight optimized for 6mm/.243 cartridges
• Spitzer boat-tail design for improved ballistic coefficient and accuracy
• Proprietary tip compound promotes consistent, explosive expansion on varmints and small game
• Thin jacket construction enhances expansion performance
• Rated for muzzle velocities up to 4000 fps
• 100 bullets per box—ideal for load development and field use

Specifications

Frequently Asked Questions

What .243 rifles work with these 70-grain Sierra BlitzKing bullets?

Sierra 1507 BlitzKings are .243 caliber (6mm) bullets, so they're compatible with any rifle chambered in .243 Winchester or other 6mm cartridges. Always verify bore diameter and consult published reloading data before finalizing your load.

Are these bullets suitable for long-range hunting?

BlitzKing bullets are designed primarily for varmint and small game hunting where expansion and impact performance are the priority. For long-range hunting applications, Sierra's MatchKing line offers different ballistic characteristics optimized for distance and accuracy.

What's the maximum velocity I can load these to?

Sierra rates the 70-grain 6mm BlitzKing for muzzle velocities up to 4000 fps. Stay within this limit to ensure consistent expansion and avoid potential barrel damage or bullet failure.

What comes in the box?

Each box contains 100 Sierra 1507 BlitzKing bullets ready for your reloading press. Ammunition components such as brass, primers, and powder are not included.